“Follow in someone’s footsteps”

“A mixed bag”

A combination of good and bad things.

“A double-edged sword”

Something that has both advantages and disadvantages.

“Big picture”

The overall situation, not small details.

“A wake-up call”

An event that makes someone realize action is needed.

“Be that as it may”

Even though that may be true.

“All in good time”

Something will happen when the right time comes.

“Burst someone’s bubble”

To disappoint someone by telling them the truth.

“Go over someone’s head”

To be too difficult for someone to understand.